Question: when was the price for the united states dollar at 0.77101 around?
Paraphrase: What year was the dollar priced at 77 cents ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q4917 p:P2284 ?s . ?s ps:P2284 ?x filter(contains(?x , '0.77101')) . ?s pq:P585 ?value}